Nature & Environment
Introducing mammals
...badged course, Mathematics for science and technology. In contrast to monotremes, no marsupial lays a shelled egg. The embryo develops for a short period inside the uterus (or womb) before transferring to (in most species) a pouch; hence marsupials are sometimes termed ‘pouched mammals’. The newborn are tiny and very unlike the adult. The numbat is a marsupial that...